Psorothamnus sp.
Indigo-bush, Indigo-Bush
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Family: Fabaceae · Type: Perennial · Native
Psorothamnus sp. (Indigo-bush) is a native California perennial in the Fabaceae family.
How to tell it apart
vs Psorodendron: Psorothamnus has gland-dotted surfaces and indigo-purple flowers; Psorodendron has smooth surfaces and yellow flowers.; vs Astragalus: Psorothamnus has gland-dotted surfaces and single-seeded pods; Astragalus has smooth surfaces and multi-seeded inflated pods.; vs Dalea: Psorothamnus has petals arising from flower base; Dalea has petals arising from a fused stamen column.; vs Condea: Psorothamnus has pea-shaped flowers; Condea has two-lipped tubular flowers (mint family).; vs Scutellaria: Psorothamnus has pea-shaped flowers; Scutellaria has hooded two-lipped flowers (mint family).
Frequently asked questions
Is Psorothamnus sp. native to California?
Yes. Psorothamnus sp. is native to California (recorded as native).
What plant family does Psorothamnus sp. belong to?
Psorothamnus sp. is in the Fabaceae family, genus Psorothamnus.
Related species
Other California species in the same genus, family, or bioregion.
- Psorothamnus spinosus — Smoke tree
- Psorothamnus arborescens — Mojave indigo-bush
- Psorothamnus arborescens var. arborescens — Mojave indigo bush
- Psorothamnus arborescens var. californicus — California indigo bush
- Psorothamnus arborescens var. minutifolius — Johnson's indigobush
- Psorothamnus emoryi — Dyebush
- Robinia neomexicana — New mexico locust
- Robinia pseudoacacia — Black locust
- Robinia sp. — Locust
Sources: Jepson eFlora · CalPhotos
Last updated 2026-04-14
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.